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(NOMOdeI') E. L. PRANTZ.

DRILL* No. 399,142. Patented Mar. 5, 1889.

N PETERS. Phuto-Lxhqgmwm, wmningaun, D. c.

.EUGENE L. FRANTZ, OF SVEET VALLEY, PENNSYL'TANIA, ASSIGNOR 0F ONE-HALFTO F. RUGGLES, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 399,142, dated March 5,1889.

Applicationiled March Z0, 1888. `Serial No. 267,850. (No model.)

To ZZ whom it may concern:

Be it known that I, EUGENE li. FRANTZ, a citizen of the United States ofAmerica, residing at Sweet Valley, in the county of Luzerne and State olPennsylvania, have invented certain new and useful Improvements inDrills, of which the following is a specification, reference being hadtherein to the accompanying drawings.

This invention pertains to certain new and useful improvements indrills, having for its object the provision of simple andhighly-ellicient means i'or securing oradj usting the drill at thedesired height and for tilting and operating the same at the desiredangle, and also forproviding means for effecting the Withdrawal of thearticle operated upon.

The invention, therefore, comprises the detail construction,combination, and arrangement ot" parts, substantially as hereinafterfully set forth, and particularly pointed out in the claims.

In the accompanying drawings, 'Figure l is a view in perspective of myinvention. Fig. 2 is avertical longitudinal sectional view, and Fig. 3is a detail view. Y

Referringl to the drawin A designates the barrel or cylinder, in theends of which are secured threaded rings or collars d a.

B is a second screw-threaded barrel or cylinder designed to be insertedthrough the barrel or cylinder A and engage the threaded rings orcollars d, as shown. Through this second barrel or cylinder, B, ispassed the drill-shaft C, one end of which is provided with acrank-handle, Zi, and to its other for- Ward end is secured, by means ofa collar, b, the inner end ot the drill-bitI b2.

D is the adjustable stand i'or securing the drill at the desired heightand to permit the same to have a pivotal movement at an angle to ahorizontal plane. This stand consists of tivo telescoping rods, d d',the former being 1 inserted down over the latter and held at the desiredpoint ot' adjust-ment by means of a thumb-screw, d2, passed through anaperture in the lower end thereof. The inner rod, d', at its lower endhas a foot, d3, from which teeth or prongs project, which aid in holdingthe stand in position, said foot being' generally covered with stone tohold the same steady.

To the upper end of the outer rod, d, is pivot ally secured a hoop orband, E, designed to encircle and inelasp the barrel A. The oppositeparallel ends of said hoop or band are se? cured against the rod d by apivotal bolt, e, passed through coincident apertures. By thisarrangement the drill can be secured at the desired height, and can thenbe tilted or brought into the desired angle in performing the drillingoperation, which is eitected by turning the hand-Wheel B upon saidcylinder or barrelthe ordinary way of operating the latter.

To the outer forward end ot the outer barrel, A, I have secured twocheeks, F F, having horizon tal apertures, wherein are designed to besecured the inner ends of grapplinghooks G, by means of short pins g,passed through coincident holes of said cheeks and hooks. The object ofthis construction is that after the. drilling operation is completed andthe drillbit is removed and the barrel B screwed so as to moverearwardly by the handxvheel upon said cylinder or barrel the articleoperated upon can be removed by means of the grappling-forks eitherpassed around the same or connected to chains or cables tied around sucharticle, and by reason of the pivotal stand said article can be swungaround and deposited at the desired point.

This invention is designed especially for use in connection with drillsfor drilling holes in boilers, tanks, ttc., and to accomplish suchdrilling the drill is firmly secured at the desired point by means ofthe foot d3 of stand D, which is additionally held in position by rocksor other weight placed on said foot. During the drilling operation thearms G perfo rm no especial oflice and are generally swung back; but atthe completion otl the drilling, when it is desired to move the boiler,tank, tbc., operated upon, the same can be readily done by tying a ropeorcable around the same and then swinging around arms G, so that theirends Will overlap beneath said rope or cable, the weight of the boileror tank serving to hold said arms as aga-inst movement. Thus secured,the boiler or tank can be moved laterally to any desired point or raisedor lowered uf'ithin the length of the drill-barrel A.

The advantages of my invention Will be ap- IOO parent to thosev skilledin the art to which it 2. In a drill, the combination, with the bar- I5rel or cylinder having the apertu red cheeks at .its forward end, of thegrappling-forks pivototally securedv to said cheeks, substantially asshown and described.

In testimony whereofl I affix my signature in 2o presenee of twowitnesses.

'E UGENE L. FRANTZ.

Witnesses:

E. L. MULLIGAN, C. W. LAYCOCK.

